.mainInner{
    display: table-cell;
    height: 100%;
    margin: 0 auto;
    display: block;
    display: table;
    margin-top: 60px;
    text-align: center;
}

.maininner h3{  
    background-color: white;
    color: rgb(0, 0, 0);
    font-family: 'Noto Serif JP', serif;
    width:100%;
    float: left;
}

.hidden_box {
    margin: 5em 0;
    padding: 0;
    width: 100%;
}
.hidden_box label {
    font-weight: bold;
    color: white;
    padding: 30px 280px;
    width: 100%;
    text-align: center;
    cursor :pointer;
    background-image: url("無題.png");
    background-size:cover;
    font-size: 2em;
    white-space: nowrap;
}
.hidden_box label:hover {
    color: #ffffff;
    background-image:url("本棚.png");
    background-size: cover;
}

.hidden_box input {
    display: none;
}
.hidden_box .hidden_show {
    height: 0;
    padding: 0;
    overflow: hidden;
    opacity: 0;
    transition: 0.5s;

}
.hidden_box input:checked ~ .hidden_show {
    padding: 10px 0;
    height: auto;
    opacity: 1;
    font-size: 2em;
}

@media only screen and (max-width: 750px) {
    .hidden_box input:checked ~ .hidden_show {
        padding: 10px 0;
        height: auto;
        opacity: 1;
        font-size: 1em;
    }
    .hidden_box label {
        font-weight: bold;
        color: white;
        padding: 30px 120px;
        width: 100%;
        text-align: center;
        cursor :pointer;
        background-image: url("無題.png");
        background-size:cover;
        font-size: 2em;
        white-space: nowrap;
    }
    }

.hidden_show a{
    color:black;
    text-decoration: none;
}
span{
    font-size: 0.7em;
}
html, body {
    overflow-x: hidden;
    height: 100%;
    text-align: center;
}
body {
    background: rgba(255, 255, 255, 0.699);
    padding: 0;
    margin: 0;
    font-family: 'Sawarabi Mincho', sans-serif;
}
.header {
    text-align: center;
    font-size: 4em;
    color: rgb(187, 49, 25);
    font-family: 'Nanum Pen Script', cursive;
    display: block;
    margin: 0;
    width: 100%;
    max-width: 100%;
    box-shadow: none;
    background-color: rgba(255, 255, 255, 0.637);
    position: fixed;
    top:0;
    height: 60px!important;
    overflow: hidden;
    z-index: 10;
    display: block;
}
#logo{
    width:220px!important;
        height: 60px!important;
}
.main {
    margin: 0 auto;
    height: 100%;
    margin-top: 60px;
}
.title{
    font-size: 2em;
    background-color: white;
    color: rgb(136, 86, 105);
    font-family: 'Noto Serif JP', serif;
    float: inline-start ;
    text-align: center;
    width:100%;
}
    #sidebarMenu {
        height: 100%;
        position: fixed;
        font-family: 'Sawarabi Mincho', sans-serif;
        left: 0;
        width: 250px;
        margin-top: 60px;
        transform: translateX(-250px);
        transition: transform 250ms ease-in-out;
        background: rgba(228, 228, 228, 0.89);
        z-index: 10;
    }
    .sidebarMenuInner{
        margin:0;
        padding:0;
    }
    .sidebarMenuInner li{
        list-style: none;
        color:black;
        text-transform: uppercase;
        font-weight: bold;
        padding: 20px;
        -webkit-box-sizing: border-box;
        -moz-box-sizing: border-box;
        -webkit-user-select: none;
        cursor: default;
    }
    .sidebarMenuInner li:hover {
        cursor: pointer;
    }
    .sidebarMenuInner li:hover {
        color: #ffffff;
        background-color: #dd7878c0;
    }
    .sidebarMenuInner .o{
        background-color: rgba(22, 22, 22, 0.096);
    }
    .sidebarMenuInner .i{
        background-color: rgba(199, 199, 199, 0.096);
    }
    .sidebarMenuInner li span{
        display: block;
        font-size: 14px;
        color: rgb(100, 100, 100);
    }
    .sidebarMenuInner li a{
        color:rgb(0, 0, 0);
        text-transform: uppercase;
        font-weight: bold;
        cursor: pointer;
        text-decoration: none;
    }
    input[type="checkbox"]:checked ~ #sidebarMenu {
        transform: translateX(0);
    }
    
    input[type=checkbox] {
        transition: all 0.3s;
        box-sizing: border-box;
        display: none;
    }
    .sidebarIconToggle {
        transition: all 0.3s;
        box-sizing: border-box;
        cursor: pointer;
        position: absolute;
        z-index: 99;
        height: 100%;
        width: 100%;
        top: 22px;
        left: 15px;
        height: 22px;
        width: 22px;
    }
    .spinner {
        transition: all 0.3s;
        box-sizing: border-box;
        position: absolute;
        height: 3px;
        width: 100%;
        background-color: rgb(53, 53, 53);
    }
    .horizontal {
        transition: all 0.3s;
        box-sizing: border-box;
        position: relative;
        float: left;
        margin-top: 3px;
    }
    .diagonal.part-1 {
        position: relative;
        transition: all 0.3s;
        box-sizing: border-box;
        float: left;
    }
    .diagonal.part-2 {
        transition: all 0.3s;
        box-sizing: border-box;
        position: relative;
        float: left;
        margin-top: 3px;
    }
    input[type=checkbox]:checked ~ .sidebarIconToggle > .horizontal {
        transition: all 0.3s;
        box-sizing: border-box;
        opacity: 0;
    }
    input[type=checkbox]:checked ~ .sidebarIconToggle > .diagonal.part-1 {
        transition: all 0.3s;
        box-sizing: border-box;
        transform: rotate(135deg);
        margin-top: 8px;
    }
    input[type=checkbox]:checked ~ .sidebarIconToggle > .diagonal.part-2 {
        transition: all 0.3s;
        box-sizing: border-box;
        transform: rotate(-135deg);
        margin-top: -9px;
    }